Offroad trailer suspension

[VORSHEER Trailers]

I would stick with Timbren independent suspension for off-road.

The ground clearance you will achieve with Timbren will surpass your truck or SUV. So if you drive over it, you know your trailer will too. No worries about hitting the bottom of your trailer.

If you really want to build an off-road trailer then Timbren will probably be the suspension you're using: https://timbren.com/axle-less-product-finder/

[ArkansasDon]

it all comes down to how far back in the back country you want to go. I pondered on axleless axles on my 1st build end up with a leaf spring & straight axle w\shock set up (24" of chassis clearance & 14" of axle to ground clearance). That trailer took me & the wife to all of our offroad destinations whether in fair trails to rough washed out trails. (3rd photo)
My current trailer modification build, I put the same type suspension system on a new 2019 Runaway Range Runner (2nd photo): I removed the original trailer suspension & hangers & kept the 3500lb Dexter Axle. I install heavier spring hangers, 31" leaf springs, Dexter Axle Flip Kit, shock & mounts. The ground clearance I gain was the same on my 1st trailer build, 24" classis clearance, 14" of axle to ground clearance. We've taking this squaredrop 30 miles back in off the main National Forest Dirt Roads in pretty rough terrain, approach is important, we crawled over exposed rock, used our recovery boards for bridging, dealt with off camber roads w\turns, creek crossings with eroded banks never had any issues getting to our destination. Known your vehicles & trailers limitations (I didn't build a belly dragger),good offroad coupler & hitch, recovery gear on board & plain ol' common sense works.

I drive a full size 2000 GMC Z71 with some suspension add-on's (Rancho), stock 5.3 motor w\performance built transmission 12,000lb winch w\75ft of 3\8" Master Pull synthetic winch line, recovery gear under the rear seat, on board air compressor & recovery traction boards.

It all comes down to what "you" want as of offroad suspension & feel is best for your situation.